扫描电子显微镜是60年代以来的一种新型的研究工具,它与光学显微镜和透射电子显微镜相比有着一些独特的优点。因此近几年来已广泛地应用到生物学的各个学科领域。扫描电子显微镜的结构和特点在介绍扫描电子显微镜之前,为了说明它的结构和特点,首先要从光学显微镜和透射电子显微镜谈起。从光学显微镜到电子显微镜光学显微镜是利用聚光器把光线聚成一束,穿过被观察的样品经过物镜和目镜的作用,把样品放大到几十倍、几百倍以至千倍,电子显微镜则是利用电 Scanning electron microscopy is a new type of research tool since the 1960s. It has some unique advantages over optical microscopy and transmission electron microscopy. Therefore, in recent years has been widely applied to various fields of biology. Scanning electron microscopy of the structure and characteristics Before introducing the scanning electron microscope, in order to explain its structure and characteristics, we must first talk about from the optical and transmission electron microscopy. From light microscopy to electron microscopy Light microscopy is the use of a condenser to concentrate the light into a beam through the observed sample through the objective and eyepiece, magnifying the sample up to tens, hundreds and thousands of times, and electron microscopy Is the use of electricity